May 26

The Push To Premium Performance


with Virbac Australia

Worms are growing increasing resistant to parasites. Infected cattle have 7.4% less average daily weight gain17 and can have 5.4% lower feed intake17.

Dr Matthew Petersen, Livestock Operations Manager at Zoetis recommends that reseller staff ask their producers six questions before selling a cattle drench:

  • Is the drench being used for weaners and young, growing cattle?
  • Are they buying cattle in or bringing cattle back from agistment blocks?
  • Are cattle being inducted into a backgrounding or feedlot facility?
  • Have they been disappointed by previous results from drenching?
  • Have they had parasite resistance diagnosed on your farm?
  • Do they also need to control ticks and/or

If a producer answered ‘Yes’ to any of these questions, the producer should consider using a dual active drench to ensure a high efficacy worm kill and to either prevent parasite resistance developing on your farm or break existing resistance profiles, said Dr Petersen.

Introducing Dectomax V – Australia’s first injectable dual active drench

DECTOMAX V is ideal for all weaners and young, growing cattle which are most economically impacted by worms. Given its very high treatment efficacy, Dectomax V is ideal as a quarantine/induction drench to prevent resistance worms entering a farm with brought in stock. It can also be used in replacement breeding stock, such as replacement heifers and where necessary can be used in adult cattle. It is an ideal product for use on entry to backgrounding and at induction prior to feedlot entry to ensure resistant worms don’t hinder weight gain.

DECTOMAX V is an evolution from Dectomax which has been trusted and used across Australia for over 20 years. DECTOMAX V combines the trusted performance of doramectin, from Dectomax, withthe added strength of levamisole. DECTOMAX V is the first injectable ML/Levamisole combination product registered in Australia and provides a dual active killing power with unsurpassed efficacy against key parasites, including those often resistant to other single active drenches.1-14

Providing high efficacy, this broad spectrum parasiticide with new dual active technology is designed to kill the most damaging parasites, including resistant worms. Easy injectable administration results in highly reliable dosing. In addition to treating gastrointestinal worms, it also controls cattle tick & sucking lice.


An injectable drench is deposited below the skin and absorbed directly into the bloodstream. Injectable drenches therefore achieve higher peak blood and tissue levels compared to pour-ons. Injectable drenches slow the development of resistance.16 Doramectin when injected achieves higher tissue concentrations than ivermectin and moxidectin.

Dectomax V was also compared to leading drenches in Australia and the results were outstanding with an overall mean efficacy of 99.8% across 13 studies18. However, two leading single active ML drenches used for comparison both showed results less than 95%, indicating a growing level of resistance to this drench class.


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